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About nuclear-grade cables?

Updated:29-03-2021
Summary:

Scope of application ·This product is suitable for the […]

Scope of application
·This product is suitable for the control and signal connection cables used in the control system network of nuclear power plants with a rated voltage Uo/U of 0.6/1kV.
·The allowable long-term working temperature of the cable conductor is 90℃, the maximum temperature of the cable conductor during short-circuit does not exceed 250℃, and the duration does not exceed 5 seconds.
·The ambient temperature when laying the cable should not be lower than 0℃.
·The allowable bending radius during cable laying is:
— Non-armored cables should not be less than 6 times the diameter of the cable
— Cables with armored or copper tape shielding results should not be less than 12 times the cable diameter
— Flexible cables with shielding structure should not be less than 6 times the diameter of the cable.
·When the conductor's long-term allowable working temperature is not more than 90℃, the cable's appraisal life is not less than 40 years.
·The finished cable should meet the requirements of Class A bundled combustion test specified in the GB/T18380.3 standard.
·Smoke density of finished cable: light transmittance is not less than 70%.
·Radiation resistance: 25×104Gy
·Halogen-free: When non-metallic materials are burned, the acidity (expressed in PH value) of the escaped gas should be greater than 4.3; the conductivity should not be greater than 10μS/mm.

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